CVE-2026-15409: SonicWall SMA1000 Appliances Server-Side Request Forgery Vulnerability
- Is it exploited?
Yes. CISA added it to the Known Exploited Vulnerabilities catalog on 14 Jul 2026, the same day the CVE record was published.
- How likely is exploitation in the next 30 days?
- 6.8%
EPSS score, percentile 94 of all scored records
- How severe?
- 10.0 Critical
CVSS v3.1 base score, from CISA's enrichment of the record
- What should I do?
Required action (CISA), due 17 Jul 2026: Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
- Which versions are affected?
Affected: 12.4.3-03245 through 12.4.3-03434; 12.5.0-02283 through 12.5.0-02800
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
What to do
Required action, set by CISA
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
CISA due date for this action: 17 July 2026.
Advisories and patches
Linked from CISA's catalog entry
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2026-0008
- https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk
- https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk
- https://nvd.nist.gov/vuln/detail/CVE-2026-15409
Affected products and versions
As listed in the CVE record.
| Status | Versions |
|---|---|
| Affected | 12.4.3-03245 through 12.4.3-03434 |
| Affected | 12.5.0-02283 through 12.5.0-02800 |
Versions not listed are: unknown.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
About this vulnerability
SonicWall SMA1000 Appliances contain a server-side request forgery vulnerability that could allow a remote unauthenticated attacker to potentially cause the appliance to make requests to unintended location.
Summary: CISA's KEV catalog, as of 28 Oct 2026.
- CISA added CVE-2026-15409 to its Known Exploited Vulnerabilities (KEV) catalog on 14 Jul 2026.
- CISA marks it as known to be used in ransomware campaigns.
- The due date CISA sets for the required action is 17 Jul 2026.
- The CVE record was published on 14 Jul 2026, the same day it was added to KEV.
- The CVE record carries a CVSS v3.1 base score of 10.0 (Critical), taken from CISA's enrichment of the record.
- FIRST's EPSS model puts the probability of exploitation in the next 30 days at 6.8% (percentile 94), as of 28 Oct 2026.
- CISA's SSVC assessment in the CVE record: exploitation active, automatable yes, technical impact total.
Source: CISA Known Exploited Vulnerabilities (KEV) catalog, 2026.10.28, as of 28 Oct 2026; CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026; FIRST Exploit Prediction Scoring System (EPSS), v2026.06.15, as of 28 Oct 2026. About the data.
Description
A Server-side request forgery (SSRF) vulnerability has been identified in the SMA1000 Appliance Work Place interface. A remote unauthenticated attacker could potentially cause the appliance to make requests to unintended location.
Source: CVE List V5 (CVE Program), cve_2026-10-28_0000Z, as of 28 Oct 2026. About the data.
Weakness
- CWE-918: Server-Side Request Forgery (SSRF)
CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record and the KEV entry.
Timeline
| Date | Event |
|---|---|
| 14 Jul 2026 | CVE record published |
| 14 Jul 2026 | Added to CISA KEV |
| 17 Jul 2026 | CISA due date for the required action |
| 4 Aug 2026 | CVE record last updated |
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- CVE-2026-15410: SonicWall SMA1000 Appliances Code Injection Vulnerability
- CVE-2025-40602: SonicWall SMA1000 Missing Authorization Vulnerability
- CVE-2023-44221: SonicWall SMA100 Appliances OS Command Injection Vulnerability
- CVE-2021-20035: SonicWall SMA100 Appliances OS Command Injection Vulnerability